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Predatory Relationships of Two Sympatric Squid, Todaropsis Eblanae And Illex Coindetii (Cephalopoda: Ommastrephidae) in Galician Waters

  • M. Rasero (a1), A.F. Gonzalez (a1), B.G. Castro (a1) and A. Guerra (a1)

The natural feeding of the two most abundant ommastrephid squid (Cephalopoda: Ommastrephidae) in Galician waters was studied and compared. A sample of 334 stomach contents of Todaropsis eblanae (34–222 mm ML) and 267 stomach contents of Illex coindetii (50–379 mm ML) caught by commercial trawlers was examined. A total of 21 (T. eblanae) and 23 (I. coindetii) different prey items, belonging to three zoological groups (Teleostei, Crustacea and Cephalopoda), were taken by these cephalopods. However, 43% of the T. eblanae diet comprised only one fish species, Micromesistius poutassou. The diet of these squid species was significantly influenced by the geographical area (both species), size (T. eblanae) and maturation (I. coindetii). Feeding rate of both species decreased with size, but the percentage of stomachs with food remains increased in maturing and mature females. Weight of prey captured was dependent on available prey sizes and, in small individuals, maximum prey weight was very close to the squid weight. Both squid species are mainly neritic nekto-benthic predators, but I. coindetii seems to have a broader and more pelagic diet.

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Amaratunga T., 1983. The role of cephalopods in the marine ecosystem. In Advances in assessment of world cephalopod resources (ed. J.F. Caddy), pp. 379—415. Rome: FAO Fisheries Technical Papers no. 231.
Bauzá-Rullán J., 1962. Contributión al estudio de los otolitos de los peces. Boletín de la Real Sociedad Española de Historia Natural (Biologi'a), 60, 526.
Bedford B.C., Woolner L.E. & Jones B.W., 1986. Length-weight relationships for commercial fish species and conversion factors for various presentations. Fisheries Data Report. MAFF. Lowestoft, 10, 141.
Boucher-Rodoni R., 1975. Vitesse de digestion chez les céphalopodes Eledone cirrhosa (Lamarck) et Illex illecebrosus (Lesueur). Cahiers de Biologie Marine, 16, 159175.
Castro B.G. & Guerra A., 1990. The diet of Sepia officinalis (Linnaeus, 1758) and Sepia elegans (D'Orbigny, 1835) (Cephalopoda, Sepioidea) from the Ria de Vigo (NW Spain). Scientia Marina, 54, 375388.
Clarke M.R., 1966. A review of the systematics and ecology of oceanic squids. Advances in Marine Biology, 4, 91300.
Crow M.E., 1982. Some statistical techniques for analysing the stomach contents of fish. In Fish food habits studies. Proceedings of the third Pacific workshop (ed. G.M. Caillet and Simenstad C. A.), pp. 815. University of Washington, USA: Washington Sea-Grant Publications.
Ehrhardt N.M., 1991. Potential impact of a seasonal migratory jumbo squid (Dosidicus gigas) stock on a Gulf of California sardine (Sardinops sagax caerulea) population. Bulletin of Marine Science, 49, 325332.
Fariña A.C., Pereiro F.J. & Fernández A., 1985. Peces de los fondos de arrastre de la plataforma continental de Galicia. Boletin del Instituto Espanol de Oceanografia, 2(3), 8998.
Fraga F., 1981. Upwelling off the Galician coast, northwest Spain. In Coastal upwelling (ed. F.A. Richards), pp. 176182. Washington, DC: American Geographical Union.
González A.F., Rasero M. & Guerra A., 1994. Preliminary study of Illex coindetii and Todaropsis eblanae (Cephalopoda: Ommastrephidae) in northern Spanish Atlantic waters. Fisheries Research, 21, 115126.
González-Gurriarán E. & Méndez M., 1985. Crustáceos Decápodos de las Costas de Galicia. I. Brachyura. Cuadernos da Area de Ciencias Bioloxicas. Seminario de Estudos Galegos, 2, 1242.
González-Gurriaran E. & Olaso I., 1987. Cambios espaciales y temporales de crustaceos decapodos de la plataforma continental de Galicia (NW de Espana). Investigacion Pesquera, Barcelona, 51, 323341.
González R., Olaso I. & Pereda P., 1985. Contributión al conocimiento de la alimentation de la merluza (Merluccius merluccius L.) en la plataforma continental de Galicia y del Cantabrico. Boletin del Instituto Espanol de Oceanografia, 2(3), 4960.
Guerra A., 1992. Mollusca, Cephalopoda. In Fauna Ibérica, vol. 1 (ed. M.A. Ramos et al.), pp. 327. Madrid: Museo Nacional de Ciencias Naturales, CSIC.
Härkonen T., 1986. Guide to the otoliths of the bony fishes of the northeast Atlantic. Sweden: Hellerup, Danbiu ApS.
Hernández-Garcáa V., 1992. Preliminary notes about feeding of three species of flying squids (Cephalopoda: Ommastrephidae) in the northwest Africa (CECAF) area. International Council for the Exploration of the Seas (CM Papers and Reports), CM 1992/K:24 13 pp.
Hirtle R.W.M., De Mont M.E. & O'dor R.K., 1981. Feeding, growth and metabolic rate in captive short-finned squid, Illex illecebrosus, in relation to the natural population. Journal of Shellfish Research, 1, 187192.
Lagardère J.-P., 1972. Recherches sur l'alimentation des crevettes de la pente continental Marocaine. Tethys, 3, 655675.
Lipinski M.R., 1979. Universal maturity scale for the commercially-important squids (Cephalopoda: Teuthoidea). The results of maturity classification of the Illex illecebrosus (LeSueur, 1821), populations for the years 1973–1977. International Commission for Northwest Atlantic Fisheries (ICNAF) Research Documents, 79/11/38, Series no. 5364, 40 pp.
Lipinski M.R., 1992. Cephalopods and the Benguela ecosystem: trophic relationships and impact. South African Journal of Marine Science. Cape Town, 12, 791802.
López-Veiga E.C., Vázquez A., Labarta E., Alonso-Allende J.M., Fuertes J.R., Pérez-Gándaras G. & Tourón J., 1977. Análisis de la pesquerá demersal de Galicia. Resultados de la campana Galicia II (Agosto-Septiembre 1975). Resultados de Expediciones Cientificas 6, 65133.
McLaughlin P.A., 1980. Comparative morphology of Recent Crustacea. San Francisco: W.H. Freeman & Company.
Nixon M., 1987. Cephalopod diets. In Cephalopod life cycles, vol. II. Comparative reviews (ed. P.R. Boyle), pp. 201219. London: Academic Press.
O'dor R.K., Durward R.D., Vessey E. & Amaratunga T., 1980. Feeding and growth in captive squid, Illex illecebrosus, and the influence of food availability on growth in the natural population. ICNAF Selected Papers, no. 6, 1522.
O'dor R.K. & Wells M.J., 1987. Energy and nutrient flow. In Cephalopod life cycles, vol. II. Comparative reviews (ed. P.R. Boyle), pp. 109133. London: Academic Press.
Olaso I. & Pereda P., 1982. The feeding of young angler fishes (Lophius budegassa Spinola and L. piscatorius L.) in divisions VIIIc and IXa of ICES. International Council for the Exploration of the Seas (CM Papers and Reports), CM 1982/G:38 11 pp.
Paine R.T., 1980. Food webs: linkage, interaction strength and community infrastructure, journal of Animal Ecology, 49, 667685.
Pereda P. & Villamor B., 1991. Relaciones biométricas en peces de la plataforma Cantábrica. Informes Técnicos. Instituto Español de Oceanografáa, no. 92, 39 pp.
Pérez-Gándaras G., 1986. Estudios de los Cefalópodos Ibéricos: sistemática y bionomía mediante el estudio morfométrico comparado de sus mandíbulas. Tesis Doctoral 37/86, Universidad Complutense de Madrid.
Raitt D.F.S., 1968. Sypnosis of biological data on the blue whiting Micromesistius poutassou (Risso, 1810). Fisheries Synopsis FAO, no. 34.
Robles Pariente R., 1970. La bacaladilla, Micromesistius poutassou (Risso), 1810. Boletín del Instituto Español de Oceanografia, 142, 116.
Rocha F., Castro B.G., Gil M.S. & Guerra A., 1994. The diets of Loligo vulgaris and L. forbesi (Cephalopoda: Loliginidae) in northwestern Spanish Atlantic waters. Sarsia, 79, 119126.
Sánchez F. & Pereiro F.J., 1992. Resultados de la campaña arrastre demersal ‘Carioca 90’ en aguas del Cantabrico y Galicia. Informes Técnicos. Instituto Español de Oceanografía, no. 127, 71 pp.
Sánchez P., 1982. Régimen alimentario de Illex coindetii (Vérany, 1837) en el mar Catalán. Investigación Pesquera. Barcelona, 46, 443–149.
Schmidt W., 1968. Vergleichend morphologische studie über die otolithen mariner knochenfische. Archiv für Fischereiwissenschaft, 19, 196.
Sokal R.R. & Rohlf F.J., 1969. Biometry. San Francisco: W.H. Freeman.
Watt J., Pierce G.J. & Boyle P.R., in press. A guide to the identification of North Sea fish using premaxillae and vertebrae. ICES Co-operative Research Report.
Zariquiey R., 1968. Crustáceos Decápodos Ibéricos. Investigación Pesquera, Barcelona 32, 1510.
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Journal of the Marine Biological Association of the United Kingdom
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